Fig. 5From: The ranging of amino acids substitution matrices of various types in accordance with the alignment accuracy criterionCorrespondence of the values of the PAM parameter to the average percentage of identity in the positions of the ancestral and mutant sequences (%id). In a mutant sequence, only substitutions are allowed. Note that the maximum PAM value shown in Table 23 of [1] is 328 and corresponds to %id = 15%. For %id values less than 15%, PAM values are added by polynomial approximation at six pointsBack to article page